It's a demand that when having a class one always concentrate on teachers．题目和参考答案——青夏教育精英家教网—

题目内容

14．It's a demand that when having a class one always concentrate on teachers．

分析要求上课时一个人总是要将注意力集中到老师身上．

解答答案：concentrate 考查首字母填空．根据句意和句子结构，要填入动词，concentrate on意为""，在demand的主语从句中，要用虚拟语气，谓语动词用should+动词原形，should可省略．

点评考查首字母填空，准确地理解句子、翻译句子，然后根据句意及提示写出单词，完成句子，使句意更通顺．

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3．

请根据如图写一篇120-150个词的短文．你的短文应包括下列要点：
1．简要描写图画内容；
2．说明图画含义；
3．表达你的观点．

5．Spending as little as  5a day on someone else could significantly（较大地） boost happiness，the team at the University of British Columbia found．
Their experiments on more than 630Americans showed they were measurably （可测量出） happier when they spent money on others-even if they thought spending the money on themselves would make them happier．
"We wanted to test our theory that how people spend their money is at least as important as how much money they earn，"said Elizabeth Dunn，a psychologist（心理学家） at the University of British Columbia．They asked their 600volunteers first to rate （评估） their general happiness，report their annual income （年收入） and detail their monthly spending including bills，gifts for themselves，gifts for others and donations to charity．
"No matter how much income each person made，those who spent money on others reported greater happiness，while those who spent more on themselves did not，"Dunn said in a statement．
Dunn's team also surveyed 16employees at a company in Boston before and after they received an annual profit sharing bonus（红利）of between  3，000and  8，000．"Employees who devoted more of their bonus to prosocial （支持社会） spending experienced greater happiness after receiving the bonus，and the manner in which they spent that bonus was a more important predictor of their happiness than the size of the bonus itself，"they wrote in their report，published in the journal Science．
They gave their volunteers  5or  20and half and clear instructions on how to spend it．Those who spent the money on someone or something else reported feeling happier about it．
"These findings suggest that very minor changes in spending allocations （津贴）-as little as $ 5-may be enough to produce real gains in happiness on a given day，"Dunn said．
32．What is the general idea of the passage？D
A．The more you earn，the greater happiness you will get．
B．Spending more money on yourself will make you happier．
C．You can spend only  5a day on someone else to get happiness．
D．If you spend money on someone else，you will feel happier．
33．The underlined word"boost"in the first paragraph probably meansB．
A．help to find    B．help to increase  C．help to bring  D．help to get
34．Which of the following statements is NOT true according to the passage？C
A．Very small changes in spending your money may be enough to gain happiness．
B．People usually think spending money on themselves will make them happier．
C．Those who spend more money on others can get much more bonus．
D．Researchers think that how people spend their money is at least as important as how much money they earn．
35．Dunn isA．
A．a psychologist at a university
B． an employee in a company
C．a reporter in a journal
D．a volunteer in the experiment．

2．Jack holds the strongbelief （信念） that he will succeed one day if he worked hard．

9．Nowadays the U．S．students are sleepy in school because they spend too much time texting，playing video games，watching TV and using the media in other ways．
"Heavy media use interferes with sleep by reducing sleep duration，making it harder to fall asleep，and lowering sleep quality，"Meilan Zhang，an assistant professor at the University of Texas at El Paso，wrote in her research review in the journal，Sleep Medicine．
But the relationship between youth's media use and sleep is not so simple，said Michael Gradisar，who authored both that review and the Sleep Medicine meta-analysis．"Technology use is the new evidence when we are trying to answer‘Why are school-age children sleeping less？'"said Mr．Gradisar，an associate professor of psychology at Flinders University in Adelaide，Australia．
There may be safe limits to technology use，Mr．Gradisar stated．For instance，recent research results indicate that using a bright screen for an hour before bed or even playing violent video games for less than that will not necessarily interfere with teenagers'sleep，he wrote．
But longer periods of usage can be harmful to sleep，Mr．Gradisar added．Rather than delaying school start times，he said，the first step should be educating parents about limiting the hours that their children are using technology before bed，and enforcing a consistent bedtime．
Early school start times are also commonly blamed for students'sleepiness，especially for adolescents．Secondary schools around the nation and the world have been delaying start times，often with positive results．
Mr．Minnich of the TIMSS and PIRLS International Study Center hesitated to put blame to any particular factor．But he did think that cost-saving measures to consolidate（合并）bus routes might help explain U．S．students'sleepiness．
"For those children who board the bus first，they must get up earlier，may end up sleeping on the way to school，and may end up arriving at school sleepy．"he said．

13．Which of the following may be the good way to help kids sleep better？C
A．Parents should be well educated．
B．Technology is forbidden at home．
C．Their playing time must be limited．
D．They are allowed to go to school early．
14．What would be the factors that cause kids sleep troubles according to the textC
a．Using the media．
b．Having breakfast．
c．Catching the bus．
d．The school timetable．
e．Doing too much homework．
A．a，d，e B．b，c，d
C．a，c，d D．b，d，e
15．Which of the following may be the best title for the text？D
A．Kids benefit a lot from technology．
B．Several sleep troubles appear at school．
C．Some tips can help kids sleep well．
D．Several factors affect kids'sleep．

19．Attention，please!British Airlines to Tokyo，flight number BA193will be boarding in 20minutes at Gate 4．

6．I've had my car for five years．It still behaves well and there's nothing wrong with it，so I think it is a reliable friend．

3．The villagers _______ closing down the factory，but till now the local government hasn't _______to it．（　　）

	A．	demanded； answered		B．	advised； replied
	C．	suggested； answered		D．	ordered； replied

4．t seems that nowadays all the world are concerned about genetically modified foods （GM foods）．GM foods develop from genetically modified organisms，which have had specific changes introduced into their DNA by genetic engineering techniques．These techniques are much more precise where an organism is exposed to chemicals to create a non-specific but stable change．For many people，the high-tech production raises all kinds of environmental，health and safety problems．Particularly in countries with long farming traditions，the idea seems against nature．
In fact，GM foods are already very much a part of our lives．They were first put on the market in 1996．A third of the corn and more than half the cotton grown in the US last year was the product of biotechnology，according to the Department of Agriculture．More than 65 million acres of genetically modified crops will be planted in the US this year．The genetic genie is out of the bottle．
However，like any new product entering the food chain，GM foods must be subjec ted to careful testing．In wealthy countries，the debate about biotech is not so fierce by the fact that they have a large number of foods to choose from，and a supply that goes beyond the needs．In developing countries desperate to feed fast-growing and underfed populations，the matter is simpler and much more urgent：do the benefits of biotech outweigh the risks？
The statistics on population growth and hunger are disturbing．Last year the world's population reached 6 billion．The UN states that nearly 800 million people around the world are unhealthy．About 400 million women of childbearing age don't have enough iron，which means their babies are exposed to various birth defects．As many as 100 million children suffer from vitamin A deficiency，a leading cause of blindness．
How can biotech help？Genetic engineering is widely used to produce plants and animals with better nutritional values．Biotechnologists have developed genetically modified rice and they are working on other kinds of nutritionally improved crops．Biotech can also improve farming productivity in places where food shortage is caused by crop damage attributable to drought，poor soil and crop viruses．
32．The passage mainly talks aboutC．
A．the world's food problem B．the development in biotech
C．the genetically modified foods D．the way to solve food shortage
33．According to the passage，GM foodsB．
A．are not cared about in wealthy countries at all．
B．may help solve the problem of poor nutrition
C．are better than naturally grown foods in some ways．
D．can cause serious trouble in developing countries
34．The underlined sentence"The genetic genie is out of the bottle．"in paragraph 2 probably means thatC．
A．GM foods are available everywhere
B．the technology in producing GM foods is advanced
C．genetic technology has been into markets．
D．genetic technology may have uncontrollable powers
35．In countries with long farming traditions，people's attitude towards GM foods seemsC．
A．Optimistic．B．Approving．C．Disapproving．D．Unbelievable．

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